CN205277126U

CN205277126U - Door closer

Info

Publication number: CN205277126U
Application number: CN201521048204.9U
Authority: CN
Inventors: 陈招胜; 汪海明
Original assignee: Wenzhou Ou De Gate Development In Science And Technology Co Ltd
Current assignee: Wenzhou Ou De Gate Development In Science And Technology Co Ltd
Priority date: 2015-12-16
Filing date: 2015-12-16
Publication date: 2016-06-01
Anticipated expiration: 2025-12-16

Abstract

The utility model discloses a door closer has solved in the middle of the process of switch door, and the atress is great, thereby the pivot holds to dare not accept and causes the wearing and tearing of pivot easily. Its technical scheme main points are the door closer axle includes the camshaft, have in the daming piston with camshaft matched with piston device, camshaft one side is provided with the arc and lacks the groove, the piston device includes and lacks the first gyro wheel of groove matched with with the arc, the arc lacks the groove other end and has the second gyro wheel inconsistent with the camshaft, first gyro wheel and second gyro wheel all include the pivot and overlap the axle sleeve of locating the pivot outside, be provided with ball group between pivot and the axle sleeve. It is lighter to have reached the sound of closing the door, the more laborsaving advantage of closing the door. Because the atress is bigger during the transmission, general pivot holds dares not accept and easy fracture, so adopt the ball can reach good transmission effect to establish ball and pivot cover in inside through the axle sleeve, further protected pivot and ball.

Description

Door closer

Technical field

This utility model relates to a kind of door closer.

Background technology

Door closer is a hydraulic press for a upper spring-like, release after passing through compression after door is opened, and is automatically shut by door, has the effect as single or double acting door, it is ensured that after door is unlocked, closes initial position accurately, timely. The internal structure of door closer is the secret world of operating, a stable operation at any time, and its inside is made up of the hydraulic pressure wet goods with rack piston, spring, control fuel tap, ball, oil circuit and filling. That installs together with door closer also has arm component, arm component is by being connected with the door closer axle on door closer, door closer axle in the market is generally gear shaft, there is gear, gear matches with the tooth bar within door closer daming piston, in opening door operation, door closer axle is rotated via arm component, carrys out swing pinion when switch gate by arm component and makes contained spring compression cause the change of hydraulic oil. But there is problem below by the cooperation of gear and tooth bar, gear and making in rack gear process sound of closing the door is relatively big, closes the door stiff not laborsaving, for causing certain inadaptability in use procedure.

Such as application number be 200580028375.8 invention relate to a kind of upper door closer, the width of outer housing is included in order to reduce upper door closer, following suggestion, described upper door closer has the compression spring of two settings nested against one another, spring fixing members and daming piston have a torsion retainer for cam disc mutually, and outer Bryant has a cross section so reduced on the both sides of the longitudinal axis, namely form an outside plane basically. But being not provided with transition piece between power transmission roller and the pivot pin of inside of this upper arm door device, in the middle of the process of switch gate, stress is relatively big, pivot pin holds dares not accept thus easily caused by the abrasion of pivot pin.

Utility model content

For the deficiency that prior art exists, the purpose of this utility model is in that to provide that a kind of sound of closing the door is light, the door closer of pivot pin long service life.

For achieving the above object, this utility model provides following technical scheme: described door closer axle includes camshaft, there is in described daming piston the piston apparatus matched with camshaft, described camshaft side is provided with arc gap groove, described piston apparatus includes the first roller matched with arc gap groove, the described arc gap groove other end has second roller inconsistent with camshaft, described first roller and the second roller all include pivot pin and are sheathed on the axle sleeve outside pivot pin, are provided with ball set between described pivot pin and axle sleeve.

By adopting technique scheme, being provided by camshaft to match with piston apparatus, it is round and smooth that camshaft has surface arc, compares original gear when transmission and tooth bar has lighter, the sound closed the door is more light, labour-saving advantage more of closing the door. During due to transmission, stress is relatively larger, and general pivot pin holds dares not accept and easily ftracture, therefore adopts ball can reach good transmission effect, and by axle sleeve, ball and pivot pin is set in inside, protects pivot pin and ball further.

This utility model is further arranged to: described first roller opposing cam axle one end is connected to energy-stored spring, and described second roller opposing cam axle one end is connected to back-moving spring.

The beneficial effects of the utility model are in that: be provided by camshaft, in the process rotating door, along camshaft center rotating, due to the arc that cam cross section is round and smooth, camshaft one end is provided with arc gap groove, first roller rod is suitable with arc gap groove, second short slot is inconsistent with the tip of cam, first roller rod and the second roller rod are connected to spring, more smooth rotation is played on the surface that door opening process cam is round and smooth, the sound sent when also mitigating switch gate, also more laborsaving.

Accompanying drawing explanation

Fig. 1 is the integral outer schematic diagram of this utility model door closer embodiment;

Fig. 2 is the camshaft schematic diagram of this utility model door closer embodiment;

Fig. 3 is the A-A sectional view of Fig. 2;

Fig. 4 is this utility model door closer inner cushion piston portion schematic diagram;

Fig. 5 is the B-B sectional view of Fig. 2.

Description of reference numerals: 1, door closer body; 2, arm component; 3, door closer axle; 31, camshaft; 32, arc gap groove; 4, daming piston; 41, piston apparatus; 41a, the first roller; 41b, the second roller; 42, energy-stored spring; 43, back-moving spring; 5, pivot pin; 51, ball; 52, axle sleeve.

Detailed description of the invention

Referring to figs. 1 through Fig. 5, this utility model door closer embodiment is described further.

A kind of door closer, including door closer body 1 and arm component 2, arm component 2 is a straight rocking arm, arm component 2 is connected with door closer body 1 by door closer axle 3, there is inside door closer daming piston 4, door closer axle 3 includes camshaft 31, the cross section of camshaft 31 is similar cam-like, arc gap groove 32 it is provided with on the downside of cam, the piston apparatus 41 matched with camshaft 31 it is provided with in daming piston 4, piston apparatus 41 includes the first roller 41a and the second roller 41b, first roller 41a and the second roller 41b is separately positioned on the both sides of camshaft 31, first roller 41a cross section is circular, first roller 41a and the second roller 41b all includes pivot pin 5 and is sheathed on the axle sleeve 52 outside pivot pin 5, it is provided with ball set between described pivot pin 5 and axle sleeve 52, ball set is circumferential compact arranged ball 51, during due to transmission, stress is relatively larger, general pivot pin holds dares not accept and easily ftractures, therefore adopt ball 51 can reach good transmission effect. and by axle sleeve, ball and pivot pin are set in inside, protect pivot pin and ball further.

Its arc surface is suitable with the arc gap groove 32 on cam, second roller 41b cross section is also circular, its arc surface is inconsistent with the tip of cam, first roller 41a bar is connected to energy-stored spring 42, second roller 41b bar is connected to back-moving spring 43, when when opening the door, moment is introduced on the camshaft 31 of door closer axle 3 via arm component 2, the rotated distance caused between the first roller 41a bar and the second roller 41b bar of cam changes, and energy-stored spring 42 is preloaded. After having reached the angle needed, spring promotes the energy-stored spring 42 being preloaded to discharge strength, has reached our common automatically locking a door in life. Also being same principle accordingly when closing the door, the spring only acted on has changed back-moving spring 43 into. It is provided by camshaft 31, in the process rotating door, along camshaft 31 center rotating, due to the arc that cam cross section is round and smooth, so when coordinating with corresponding piston apparatus 41, playing more smooth rotation, the sound sent when also mitigating switch gate, also more laborsaving.

The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to above-described embodiment, and all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model. It should be pointed out that, for those skilled in the art, without departing from the some improvements and modifications under this utility model principle premise, these improvements and modifications also should be regarded as protection domain of the present utility model.

Claims

1. a door closer, including door closer body and arm component, arm component is connected with door closer body by door closer axle, described door closer body interior has daming piston, it is characterized in that: described door closer axle includes camshaft, there is in described daming piston the piston apparatus matched with camshaft, described camshaft side is provided with arc gap groove, described piston apparatus includes the first roller matched with arc gap groove, the described arc gap groove other end has second roller inconsistent with camshaft, described first roller and the second roller all include pivot pin and are sheathed on the axle sleeve outside pivot pin, it is provided with ball set between described pivot pin and axle sleeve.

2. door closer according to claim 1, it is characterised in that: described first roller opposing cam axle one end is connected to energy-stored spring, and described second roller opposing cam axle one end is connected to back-moving spring.